<template>
  <div class="todo-header">
    <input type="text" v-on:keyup.enter="add_item($event)" autofocus placeholder="请输入你的任务名称，按回车键确认" />
  </div>
</template>

<script>
import { nanoid } from "nanoid"
export default {
  name: "Top",
  methods: {
    add_item(e) {
      let value = e.target.value;
      if (!value.trim())
        return false
      const todo = {
        id: nanoid(),
        title: value,
        done: false
      }
      this.$emit("add_item", todo)
      e.target.value = ""
    },

  },
  props: {
    todos: {
      type: Array,
      required: true,
    }
  }
}
</script>

<style style="less" scoped>
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}

/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
</style>